Emscripten support roadmap

[tomaka]

Related: rust-lang/rust#2235

Work is being done on the emscripten branch

• Basic support
• Inputs

[tomaka]

I looked into it, and support for emscripten will probably be easy to add once the rust compiler compiles reliably for this platform.

For the moment I didn't even manage to compile for emscripten because today emscripten's IR is incompatible with rust's IR output (different versions). Getting an old version of the rust compiler would likely fix this, but would require modifying a lot of code.

[hannobraun]

I have a limited proof of concept here: https://github.com/hannobraun/rum

The repository includes the exact versions that worked for me as submodules. I last updated this on 27 July. Maybe it's helpful to you.

[tomaka]

My initial attempt at compiling gl-init-rs for emscripten was based on your work :)

However when running emcc I encountered a lot of errors related to a new LLVM attribute that was added in version 3.4 (deferenceable IIRC). I tried to manually solve them, but ran into several more errors that I couldn't solve (for example something_mul requires a constant in LLVM 3.3 and not in LLVM 3.4).

I think that the best way to make rust and emscripten work together would be to ask the emscripten maintainers for advices, but I don't have the credibility nor the time for this.

[hannobraun]

I think that the best way to make rust and emscripten work together would be to ask the emscripten maintainers for advices, but I don't have the credibility nor the time for this.

Time is the big problem for me, too. Maybe one day :)

[iceiix]

Work is being done on the emscripten branch

This link is broken, is this the latest status? #856 Platform support for emscripten (also this open pull request but it has conflicts: #857 Improve Emscripten support)

[francesca64]

@iceiix this issue is very outdated. A better place to ask about Emscripten support is over on winit; feel free to open an issue there.

[iceiix]

rust-windowing/winit#760